Planer-knife-setting gage.



A. TOMKINSON.

PLANER KNIFE SETTING GAGE. APPLICATION FILED APR.30. |915.

1,203,814.' PanIed'Nov. 7,1916.

' Aoy @NTT STATES TENT FFTCE.

PLANER-KNIFE-SETTING- GAGE.

Laoasii.

Application led April 30, 1915.

To all/whom t may concern.'

Be it known that I, ARTHUR ToMkiNsoN, a citizen of the Dominion of Canada, residing at Grindrod, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Planer- Knife-Setting Gages, of which the following is a specification.

This invention relates to a gage which is designed to facilitate the setting of the knives of a wood planer or molding machine.

The invention is particularly described in the following specification, reference being made to the drawings by which it is accompanied, in which:

Figure l is a face view of the gage withdrawn from a cylinder, the knives of which are to be set. Fig. 2 is a cross section on the line A in Fig. l. Fig. 3, a cross section on the line B in Fig. l showingits application to set the knife blades of a planer cylinder, and Fig. 1i is a face view of the bearing plate of the adjusting nut of the gage bar.

In these drawings 2 represents the cylinder of a wood planer, 3 being the knives secured thereto, which it is the subject of this gage to facilitate the setting of. The gage comprises a straight edge 5 which is graduated along its edge 6 in inches and fractions and a graduated line 7 at right angles to the straight edge at each end of the knife setting gage bar. The gage bar S has a straight edge adjacent to that of 5 and is pointed, as at 9, at each end for reference to the graduations of the lines 7. j This gage bar 8 is connected to the straight edge by a bolt 10 at each end, see Fig. 3, provided with a milled nut, the body of each bolt being movable within an elongated slot 1l in the straight edge 5. The gage bar is adjustable in its distance from the edge 6 of the straight edge 5 by means of screws l2 which are pivotally vconnected by screws 13 to the straight edge, see Fig. 2, which screws pass through nuts 14 rotatably mounted in bearings 15 secured to and projecting from the upper edge of the straight edge 5, which bearings fit into circumferential grooves in the nut. A

In use, to set the knives of a planer parallel, the nuts of the bolts l0 are released and the gage bar 8 is adjusted to set the knives the required distance from their cylinder and these nuts are tightened again to secure the bar in that position of adjustment. All

Specification of Letters Patent.

Patented Nev. *7, 1916.

seriaino. 24,989.

the knives of the cutter being set to this gage bar may be relied upon to be alike, or if variation is required, one cutter or a set of cutters may be set by the screw adjustment and the graduated lines 7 to any desired amount beyond the other or others.

Although described as used for parallel cutters, obviously the gage bar may be inclined to set the knives at any desired angle, as will be obvious. The straight edge 5 being free from any projection that will interfere with its use as a straight edge or as a graduated rule, may be applied as such, when required.

Having now particularly described my invention, I hereby declare that what I claim as new and desire to be protected in by Letters Patent, is:

1. A. wood planer knife setting gage which comprises a thin flat straight edge plate have ing a pair of slots extending normal to the straight edge, a gage bar slidable on the face of the straight edge plate, said gage bar being of less length than the length of the straight edge plate and having its edges shaped to form pointers,.said straight edge plate having graduated lines normal to the straight edge face at each end of said gage bar to coperate with the same, bolts passing through said slots and through said gage bar to adjustably secure said gage bar to said straight edge plate, screw adjusting devices connected to said gage bar, and devices on said straight edge plate for engaging said screw adjusting devices, all being arranged substantially as shown and for the purposes described.

2. A wood planer knife setting gage, comprising the combination with a straight edge graduated along its edge and having graduated lines adjacent to each end at right angles to the edge, of a gage bar slidable on the face of the straight edge and extending between the graduated lines each end of said bar being reduced to form an indicating point, means for securinlT the gage bar on the face of the straight edpge said means comprising a bolt through the straight edge and the gage bar adjacent to each end of the bar, said bolt movable in an elongated slot in the straight edge, and an adjusting screw at each end of the bar.

8. A wood planer knife setting gage comprising the combination with a straight edge plate graduated along its edge and having graduated lines adjacent to each end at right angles to the edge,'of a gage bar slidable on the face of the straight edge plate and eX- tending between the graduated lines, each end of said bar being provided with pointer members to form an indicating device to cooperate with said graduated lines, means for adjustably securing the gage bar on the face of the straight edge plate, a pair of bolts pivoted to said gage bar near its ends, nuts Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,Y

on said bolts having circumferential grooves, lo

and plates secured to said straight edge plate and having recesses to project into said nut grooves and hold said nuts against movement inthe direction of the bolt, all being arranged substantially as shown and `for the 15- Washington, D. C. 

